Samuel was born at
South Carolina on 2 October 1834. He was the son of
Thomas McDill and
Margaret "Peggy" Moffatt. He married
Mary Elizabeth McDaniel at
Chester Co., South Carolina, in December 1865. Samuel was listed as the head of a family on the 1870 Census at
Chester Co., South Carolina. 1870 South Carolina, Chester Co., lists the following family: Samuel M. McDill, age 35, born in South Carolina; Mary E. McDill, age 25, born in South Carolina; James S. McDill, age 3, born in South Carolina; Margaret McDill, age 3 months, born in South Carolina; Caroline Sterling, age 16, negro.. Samuel died on 2 March 1905 at age 70. His body was interred in March 1905 at
Chester Co., South Carolina, at Hopewell Cemetery.